3m 4540 protective coveralls 3m gt700000950 these double extra large protective coveralls from the 3m 4540 range are based on dual material technology and offer ce category iii type 56 protection these coveralls are ideal for use in applications where both high levels of protectiion and comfort are required ideal for paint spraying and powder coating light industrial cleaning and machine maintenance and a sound choice if you are removing or inspecting asbestos or handling toxic powders